Xcode 4 中没有 gcc 4.2 编译器选项？

发布于 2024-12-06 05:21:29 字数 273 浏览 2 评论 0原文

在我的 Xcode 4 安装中，我只有 2 个编译器选项：

Apple LLVM 编译器 3.0
GCC LLVM 4.2

在许多 Xcode 示例中，我看到 GCC 4.2 显示为第三个选项，但这根本不存在。我特意对 XCode 4 进行了全新安装。如果 GCC 4.2 尚不存在，是否有添加 GCC 4.2 的标准方法？我的一个项目要求我使用 GCC（而不是 GCC LLVM），其他项目我对 GCC LLVM 很满意，所以这只是该项目的一个问题。

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迷鸟归林 2024-12-13 05:21:29

这是一种在 xcode 4.2 中启用 gcc 4.2 编译的方法。这主要是通过命令行完成的，因此当您看到以以下开头的行时：[ 15:30 jon@MacBookPro / ]$，您需要打开Terminal.app并运行在 $ 之后开始的命令。

在此过程中不会删除或删除任何文件或目录，因此如果您将来需要使用 LLVM 进行编译，可以轻松撤消。

下载 - 但暂时不要安装 - xcode_4.1_for_lion.dmg 或 xcode_4.1_for_snow_leopard.dmg< /p>
< p>现在，按照以下步骤将 Xcode 4.1 安装到/Developer-4.1：
1. 备份工作 /Developer 目录（安装 Xcode 4.2 的位置）
2. 使用默认安装位置 (/Developer) 运行 Xcode 4.1 安装程序
3. 将新的 Xcode 4.1 安装移至 /Developer-4.1：
```
[ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer /Developer-4.1
```
4. 将 Xcode 4.2 开发人员目录移回 /Developer：
```
[ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer-4.2 /Developer
```

编辑 Xcode 4.2 GCC 4.2.xcspec 文件以获取 gcc 4.2在编译器选项列表中显示^[1]：

[ 15:30 jon@MacBookPro / ]$ sudo vi "/Developer/Library/Xcode/PrivatePlugIns/Xcode3Core.ideplugin/Contents/SharedSupport/Developer/Library/ Xcode/插件/GCC 4.2（合理块）.xcplugin/Contents/Resources/GCC 4.2.xcspec"

将 41 和 42 行从此更改：

ShowInCompilerSelectionPopup = NO;
不再支持=是；

致此：

ShowInCompilerSelectionPopup = YES; 
不再支持=否；

备份 Xcode 4.2 iOS/Simulator Framework usr 目录：

[ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer/Platforms/iPhoneOS.platform/Developer/usr /Developer/Platforms/iPhoneOS.platform /开发者/usr.backup
[ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer/Platforms/iPhoneSimulator.platform/Developer/usr /Developer/Platforms/iPhoneSimulator.platform/Developer/usr.backup

将 Xcode 4.1 iOS/Simulator Framework usr 目录复制到 Xcode 4.2：< /p>

[ 15:30 jon@MacBookPro / ]$ sudo cp -rv /Developer-4.1/Platforms/iPhoneOS.platform/Developer/usr /Developer/Platforms/iPhoneOS .platform/开发者/usr
[ 15:30 jon@MacBookPro / ]$ sudo cp -rv /Developer-4.1/usr /Developer/Platforms/iPhoneSimulator.platform/Developer/usr

复制 gcc 和 info从 Xcode 4.1 到 Xcode 4.2 的 iOS SDK 库目录^[2]：

[ 15:30 jon@MacBookPro / ]$ sudo cp -rv /Developer-4.1/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk /usr/lib/gcc /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk/usr/lib/gcc
[ 15:30 jon@MacBookPro / ]$ sudo cp -rv /Developer-4.1/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk/usr/lib/info /Developer/Platforms/iPhoneOS.platform/Developer /SDKs/iPhoneOS5.0.sdk/usr/lib/info

使用gcc-4.2编译！

这是一个我写的博客文章提供了有关此过程的更多信息。如果您遇到任何问题或有任何疑问，请随时在博客上发表评论。

^[1] 如果从命令行打开（使用类似 vi、emacs、nano 等）确保将路径用引号括起来 "/long path/with space/in it/ file.xcspec" 或转义空格/some/long\ path/with\spaces/in\ it/file.xcspec

^[2] 这是必要的，因为 iPhoneOS.platform SDK 有自己的单独的 /usr/lib 目录，但 iPhoneSimulator.platform SDK 没有

Here is a way to enable compiling with gcc 4.2 in xcode 4.2. This is mostly done via command line so when you see lines starting with: [ 15:30 jon@MacBookPro / ]$, you need to open up Terminal.app and run the command that starts after the $.

No files or directories are removed or deleted in this process, so it is easy to undo if you need to compile with LLVM in the future.

Download - but do not install yet - xcode_4.1_for_lion.dmg or xcode_4.1_for_snow_leopard.dmg
Now, follow these steps to install Xcode 4.1 into /Developer-4.1:
1. Backup the working /Developer directory (where Xcode 4.2 is installed)
2. Run the Xcode 4.1 installer using the default install location (/Developer)
3. Move the new Xcode 4.1 installation to /Developer-4.1:
```
[ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer /Developer-4.1
```
4. Move the Xcode 4.2 developer directory back to /Developer:
```
[ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer-4.2 /Developer
```

Edit the Xcode 4.2 GCC 4.2.xcspec file to get gcc 4.2 to show in the list of compiler options ^[1]:

[ 15:30 jon@MacBookPro / ]$ sudo vi "/Developer/Library/Xcode/PrivatePlugIns/Xcode3Core.ideplugin/Contents/SharedSupport/Developer/Library/Xcode/Plug-ins/GCC 4.2 (Plausible Blocks).xcplugin/Contents/Resources/GCC 4.2.xcspec"

Change lines 41 and 42 from this:

ShowInCompilerSelectionPopup = NO;
IsNoLongerSupported = YES;

To This:

ShowInCompilerSelectionPopup = YES; 
IsNoLongerSupported = NO;

Backup the Xcode 4.2 iOS/Simulator Framework usr directories:

[ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer/Platforms/iPhoneOS.platform/Developer/usr /Developer/Platforms/iPhoneOS.platform/Developer/usr.backup
[ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer/Platforms/iPhoneSimulator.platform/Developer/usr /Developer/Platforms/iPhoneSimulator.platform/Developer/usr.backup

Copy Xcode 4.1 iOS/Simulator Framework usr directories to Xcode 4.2:

[ 15:30 jon@MacBookPro / ]$ sudo cp -rv /Developer-4.1/Platforms/iPhoneOS.platform/Developer/usr /Developer/Platforms/iPhoneOS.platform/Developer/usr
[ 15:30 jon@MacBookPro / ]$ sudo cp -rv /Developer-4.1/usr /Developer/Platforms/iPhoneSimulator.platform/Developer/usr

Copy the gcc and info iOS SDK library directories from Xcode 4.1 to Xcode 4.2 ^[2]:

[ 15:30 jon@MacBookPro / ]$ sudo cp -rv /Developer-4.1/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk/usr/lib/gcc /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk/usr/lib/gcc
[ 15:30 jon@MacBookPro / ]$ sudo cp -rv /Developer-4.1/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk/usr/lib/info /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk/usr/lib/info

Compile using gcc-4.2!

This is a blog post I've written with a little more info about this process. Feel free to leave a comment on the blog if you run into any issues or have any questions.

^[1] If opening from a command line (using something like vi, emacs, nano, etc) make sure to either enclose the path in quotes "/long path/with spaces/in it/file.xcspec" or escape the spaces /some/long\ path/with\ spaces/in\ it/file.xcspec

^[2] This is necessary because the iPhoneOS.platform SDK has its own seperate /usr/lib directories but the iPhoneSimulator.platform SDK does not

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